Campus Units

Electrical and Computer Engineering

Document Type

Conference Proceeding

Conference

IEEE Global Communications Conference (IEEE GlobeCom 2009)

Publication Version

Submitted Manuscript

Link to Published Version

https://doi.org/10.1109/TCOMM.2010.06.090197

Publication Date

6-3-2010

Journal or Book Title

IEEE Transactions on Communications

Volume

58

Issue

6

First Page

1686

Last Page

1694

DOI

10.1109/TCOMM.2010.06.090197

Conference Title

IEEE Global Communications Conference (IEEE GlobeCom 2009)

Conference Date

November 30-December 4, 2009

City

Honolulu, HI

Abstract

There is an increasing need for high density data storage devices driven by the increased demand of consumer electronics. In this work, we consider a data storage system that operates by encoding information as topographic profiles on a polymer medium. A cantilever probe with a sharp tip (few nm radius) is used to create and sense the presence of topographic profiles, resulting in a density of few Tb per in.2. The prevalent mode of using the cantilever probe is the static mode that is harsh on the probe and the media. In this article, the high quality factor dynamic mode operation, that is less harsh on the media and the probe, is analyzed. The read operation is modeled as a communication channel which incorporates system memory due to inter-symbol interference and the cantilever state. We demonstrate an appropriate level of abstraction of this complex nanoscale system that obviates the need for an involved physical model. Next, a solution to the maximum likelihood sequence detection problem based on the Viterbi algorithm is devised. Experimental and simulation results demonstrate that the performance of this detector is several orders of magnitude better than the performance of other existing schemes.

Comments

This is a manuscript of a proceeding from the IEEE Global Communications Conference (2009): 1686, doi:10.1109/TCOMM.2010.06.090197. Posted with permission.

Rights

Copyright 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright Owner

IEEE

Language

en

File Format

application/pdf

Published Version

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